Dip painting apparatus.



un. 689,563'. l Patented nec. 24, mol.. w. H. oncuTT a c.'i:. sNEmKE.

DIP PAINTING APPARATUS.

(Application Sled In'. 26, 1901.)

2 Sheets-Sheet I.

(lo Rodel.)

WTNESSES Nq. 639563. Patented Dec. 24, 190|. W. H. URCUTT & C; E.SNEDIKEB. DIP PAINTING APPARATUS.

(Application led Mar. 26, 1901.) (No Model.) v v 2 Sheets-Sheet" 2,

'me Noms verras no, Pumaumo.. wAs'gdNhTou, ny c UNITED STATES PATENTOFFICE;

WILLIAM H. ORCUTT AND CHARLES E. SNEDIKER, OF NOBLESVILLE, INDIANA,ASSIGNORS TO THE 'MOELVVAINE-RICHARDS COMPANY, OF INDIANAPOLIS, INDIANA,A CORPORATION OF INDIANA.

SPECIFICATION forming part of Letters Patentio. 689,563, dated December24, 1901. Application led March 25, 1901. SeriaINmBZJOQ. (No model.)

T @ZZ whom, t may concern/.-

Be it known that we, WILLIAM H. ORCUTT and CHARLES E. SNEDIKER, citizensof the United States, residing at Noblesville,in the county of Hamiltonand State of Indiana, have invented certain new and useful Improvementsin Apparatus for Coating Articles, of which the following is aspecification.

The object of our said invention is to provide an apparatus wherebysoil-pipes or other articles may be conveniently, expeditiously, anduniformly tarred or dipped. Heretofore this work has been done byoperatives dipping the pipes into the molten tar by hand, which isobviously a slow and tedious operation, while the results are somewhatununiform.

Ourimproved apparatus consists, generally speaking, of an endlesscarrier traveling over and into a pit containing the molten tar or Ydipping'material and thence off to a suitable place of delivery and afurnace arranged between the point where the joints of soil-pipe areplaced on the carrier and the point where the carrier runs into thetar-pit, through which the carrier bearingthe joints of soil-pipe willpass, whereby said joints of pipe are heated, and thus put intocondition to best take on the thin layer of tar required.

Referring to the accompanying drawings, which are made a part hereof,and on which similar reference characters indicate similar parts, Figure1 is a top or plan view of an apparatus embodying our said invention;Fig. 2, a

view, partly in side elevation and partly inV longitudinal verticalsection, as seen when looking in the direction indicated by the arrowsfrom the dotted line 2 2 in Fig. 1; Fig. 3, a transverse verticalsectional view,on a somewhat-enlarged scale, asl seen when looking inthe direction indicated by the arrows from the dotted line 3 3 in Fig.2; Fig. 4, a detail view showing the furnace-doors in the position theyoccupy when forced open at the moment when a bar 12, carryinga joint ofpipe, is passing through; and Figs. 5, 6, and 7, detailviews, on a stillfurther enlarged scale, showing the means whereby the joints of pipe aresuspended to the carriers more plainly.

Upon a suitable framework 1 is mounted a shaft 2,'b'e`aringsprocket-wheels 3.

Attheopposite end of theapparatus is a second framework 4, upon which islikewise mounted a shaft 5, bearing sprocket-wheels 6. Extending betweenthese sprocket-wheels are the chains 7 of the endless carrier. The shaftat one end of the apparatus is a driving-shaft and is Vdriven from anysuitable source of power (not shown) and by any suitable means.

A belt B, (see Fig. 2,) a pulley 30 therefor, a second shaft 3l,on.whichsaid pulley is mounted, and suitable spur-gearing 32 and 33 to reducethe speed and cause the carrier to travel slowly are shown; butobviously any suitable means may be employed. The shaft at the other endof the apparatus is shown as mounted in adjustable boxes, andadjusting-screws S are shown as the means for adjusting the boxes andkeeping the carrier-chains sufliciently taut.

At a point intermediate the ends is a third framework 8 above thetar-pit, and under this framework are the idle wheels 9, 10, and 11, bymeans of which the carrier-chains are caused tio travel down into thetar-pit and up out again as they pass said pit and before proceeding ontheir way.

Bars or rods 12 extend transversely between the chains 7 at suitableintervals throughout the length of said chains, and these bars or rodsare provided with suitable rests 13 to receive and hold the joints ofsoil-pipe when placed thereon. Such joints of pipe are always providedwith a hub at one end, and the rests 13 are of a suitable size to passunder said hubs,which rest thereon, as shown. The arrangement is suchthat the soil-pipes may constantly maintain a perpendicular positionirrespective of the direction in which the carrier bearing them istraveling. Inthe construction shown this is accomplished bjsivoting thebars l2 to the chains 7, as best shown in Figs. 5 and 7.

As above stated, avfurnace is arranged between the point where thejoints of pipe are placed on the carrier and the frame above thetar-pit. This furnace has suitable sides 14 and top 15, which arepreferably built perstruction. A iiue F is shown at one side.

IOO

Y Y r One end of this furnace is provided with ingress-doors 16, 17, and18, two of which are upright and/the other horizont-al, and at t-heother end with corresponding egress-doors 19, 20, and 2l, (door 20 doesnot show in the drawings, but corresponds to door 17 on the other end,as will be understooth) the latter heilig near the tar-pit. Theingress-doors are mounted so that they maybe pushed open inwardly andare arranged to automatically close as soon as the force applied isremoved. The egress-doors are likewise arranged to be pushed openoutwardly and to automatically close when the force applied is removed.This may be provided for in any suitable way. l have shown the uprightdoors inclined somewhat and the hinges arranged so that the naturaltendency of said doors is to swing shut. In addition the horizontaldoors, which are above the vertical doors, are arranged to bearagainst'said vert ical doors and aid in forcing them shut, as will beclearly understood by ah examination of Figs. 2 and 4. This arrangementis simple, inexpensive, effective, and not. liable to get out of order.

The top of the furnace extends to a height which brings it between thetwo laps of the traveling carrier, so that the lowerlap of said carrierpasses through the furnace beneath its top. The carrier-chains passalongside the horizontal swinging doors, said horizontal doors being ofa length to pass down between said chains. They therefore remain shut,`except when the transverse bars carrying the joints of pipe come incontact therewith, when they are forced open thereby, as will be readilyunderstood upon an examination of the drawings; but vthey willautomatically close as soon as the pipe-carrying parts pass out ofcontact therewith.

Beneath the frame S is tar-pit 22 of suitable size, which is kept filledwith molten tar, and suitable means, as a steam-pipe 23, are provided tokeep it heated and in a properly molten condition. Beyond the tar-pit isa drip board or trough 24, ont-o which the snrplus tar will fall as thejoints of pipe are being borne along by the carrier toward the point ofremoval. Being quite thin they also cool perceptibly during the travelfrom the pit to said point.

The lower laps of the carrier-chains 7 rest upon and are supported bysuitable longitudinal ways 25, and are thus enabled to support thejoints of pipe carried thereby at a level. The portions of these wayswithin the furnace should be of metal and those outside may be of metalor wood. Idle wheels 26 support the upper, returning, or idle portion ofthe carrier sufficiently.

In operation our improved apparatus is used in the following manner: Anoperative stands alongside the carrier near the frame 1 and takes thejoints of soil-pipe which (after they are cast and tested) are broughtto him and hangs them onto the carrier as it passes along on its way tothe furnace, placing the hubs of said joints one by one upon the rests3. 'lhe carrier moves slowly along, bearing these joints of pipe firstinto the furnace, the ingress-doors of which yield and open as saidjoints come in contact therewith and as soon as they have passedautomatically close. As the joints are borne slowly through the furnacethey become heated to a proper degree and emerge through the doors 19,20, and 2l in a heated condition. The carrier then passes from the idlewheels 9 down to the idle wheels 10, carrying the heated pipe down intothe tar-pit, where it is submerged in the tar. After passing the idlewheels 10 the carrier begins to rise, and by the time it has reached theidle wheels 11 the joint of pipe attached at that point is completelywithdrawn from the tar. It then passes on, the surplus thin tar drippingoff ontothe drip board or trough 24. As the joints of pipe respectivelyreach the end of the carrier at apoint near the sprocket-wheels 6 anoperative positioned at this point removes them and disposes of themproperly, usually placing them on a truck o1` barrow, by means ot' whichthey are carried away to the pipe-yard. As will be readily seen, thepipes, by means of our improved apparatus, are handled expeditiously andare all treated uniformly, with the result that much time and labor anda considerable percentage of the coating material are saved.

Having thus fully described our said invention, what we claim as new,and desire to secure by Letters Patent, is-

1. An apparatus for coating metal articles comprising a furnace, areceptacle containing the coating material arranged near to and at alower level than said furnace, an endless carrier adapted to receive thearticles to be coated and arranged to pass and carry said articlesbodily through said furnace and said receptacle, guides whereby saidcarrier is caused to descend toward and rise from said receptacle, andmeans for propelling said carrier.

2. The combination with an endless carrier mounted on suitable wheelsand adapted to receive and transport articles to be coated, a receptaclearranged below said carrier containing a coating material, and a furnacethrough which the carrier bearing the articles passes on its way to thereceptacle, whereby the said articles are first heated and thensubmerged in and withdrawn from the coating material.

3. The combination, in a coating apparatus, of an endless carrieradapted to receive and transport the articles to be coated, a receptaclethrough which said carrier passes containing the coating material, and afurnace through which said carrier passes before it reaches saidreceptacle, said furnace being provided with automatically-operatingingress and egress doors, substantially as set forth.

4. The combination, in a coating apparatus, of an endless carrierruiming over suit- IOO IIO

able Wheels and composed of two chains with transverse bars extendingbetween them, said bars being provided with rests or hangers for thearticles to be coated, the same being pivotally mounted, whereby saidarticles are maintained in proper position irrespective of the directionin which the carrier bearing them is traveling, thereby enabling thecarrier to descend toward and rise from the receptacle containingcoating material, a furnace arranged so that the carrier bearingthearticles to be coated may pass therethrough, and said receptaclearranged below said carrier, substantially as set forth.

5. The combination, in a coating apparatus,of suitable framework, shaftsmounted thereon, wheels on said shafts, an endless carrier passing oversaid wheels, said carrier being composed of two chains, bars extendingtransversely between and pivoted to said chains, and rests or hangersfor the articles to be coated secured to said bars, a recep-I taclearranged below said carrier, guidingwheels over which the carrier-chainspass whereby said chains are caused to descend toward and rise from saidreceptacle in passing, a furnace arranged near said receptacle throughwhich the carrier bearing the articles to be coated passes beforearriving at said receptacle, said furnace being provided withautomatically-operating ingress and egress doors, and .suitable guidesor ways for supporting the carrier, substantially as shown anddescribed.

6. The combination, in an apparatus for tarringv soil-pipes, of anendless carrier, a pit below said carrier containing the molten tar,wheels over which said carrier runs adapted to guide said carrier downtoward and up from said pit, and a furnace arranged between the pit andthe end support for the carrier, provided with openings through Whichsaid carrier may pass, whereby the articles carried thereby are takenbodily through said furnace, `substantially as set forth.

ln Witness whereof we have hereunto set our hands and seals, atNoblesville, Indiana, this 21st day of March, A. D., 1901.

WILLIAM Il. OROUTT. [L. s]

CHARLES E. SNEDIKER. [1.. s]

Witnesses:

J. C. JONES.

A. J. BROWN.

